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Comment on Show HN: Minimal, self-hosted exercise tracker

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cj

Nice work. Any recommendations for folks looking for an app that suggests workouts and routines based on prior workout history? (E.g. identifying muscle groups not being hit by historical routines)

I’ve just been keeping a running workout log in Apple Notes for the past couple of months.

I’ve had a lot of success just copy/pasting my workout log into ChatGPT and it’s surprisingly good at making recommendations, but I’m scared that by using an app I’ll loose access to the raw data unless it’s somehow exportable.

Here's what I did:

- I wrote down my goals, equipment, and past workout history.

- Then I asked ChatGPT to generate a P/P/L workouts around that, in 8 separate chat instances

- I then wrote another prompt for a fitness expert adjudicator and asked it to compare two of the workouts, determine their strengths and weaknesses (based on above goals), and develop a third workout based on the strengths of the two provided

- I ran this in "tournament style" for all 8 workouts with three brackets. This ended up converging into an optimal workout

I actually took this final workout to my personal trainer and he said it was perfect for my goals and wouldn't change anything. I've been running it for 3 months now and I am quite happy.

cj

This is something I would happily pay for. And a great use of LLM.

If someone were to turn this into a business, offer the workout advice for free and then charge extra by layering in nutrition and meal plans on top. Then sell to personal trainers for use with their clients.

If it’s not too privacy-invading, would you mind sharing the chatgpt transcripts for these prompts?

Fitbod was pretty good about this. You can tell it what gym equipment you have and it will design workouts around that and the muscle groups that aren’t tired from the last session.

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